Refactor error handling and requests
This commit is contained in:
parent
d12f09ed08
commit
86e2a700f8
81
package-lock.json
generated
81
package-lock.json
generated
@ -1078,6 +1078,14 @@
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@ -1541,6 +1549,11 @@
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"@types/node": "*"
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}
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"@types/hammerjs": {
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"version": "2.0.36",
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@ -7951,6 +7964,11 @@
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"object.assign": "^4.1.0"
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"keycharm": {
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@ -11296,6 +11314,24 @@
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"resolved": "https://registry.npmjs.org/react-error-overlay/-/react-error-overlay-6.0.5.tgz",
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"integrity": "sha512-+DMR2k5c6BqMDSMF8hLH0vYKtKTeikiFW+fj0LClN+XZg4N9b8QUAdHC62CGWNLTi/gnuuemNcNcTFrCvK1f+A=="
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},
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"react-graph-vis": {
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"version": "1.0.5",
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"resolved": "https://registry.npmjs.org/react-graph-vis/-/react-graph-vis-1.0.5.tgz",
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"requires": {
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"lodash": "^4.17.15",
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"prop-types": "^15.5.10",
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"uuid": "^2.0.1",
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"vis-network": "^5.1.1"
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},
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"dependencies": {
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"uuid": {
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"version": "2.0.3",
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"resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.3.tgz",
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"react-is": {
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"version": "16.12.0",
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"resolved": "https://registry.npmjs.org/react-is/-/react-is-16.12.0.tgz",
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@ -13586,6 +13622,51 @@
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"extsprintf": "^1.2.0"
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}
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},
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"vis-data": {
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"version": "6.3.5",
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"resolved": "https://registry.npmjs.org/vis-data/-/vis-data-6.3.5.tgz",
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"requires": {
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"vis-util": "2.0.1",
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"vis-uuid": "1.1.3"
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},
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"dependencies": {
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"vis-util": {
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"version": "2.0.1",
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"resolved": "https://registry.npmjs.org/vis-util/-/vis-util-2.0.1.tgz",
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"optional": true
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}
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}
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},
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"vis-network": {
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"version": "5.4.1",
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"resolved": "https://registry.npmjs.org/vis-network/-/vis-network-5.4.1.tgz",
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"requires": {
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"@egjs/hammerjs": "^2.0.15",
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"component-emitter": "^1.3.0",
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"keycharm": "^0.2.0",
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"moment": "^2.24.0",
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"timsort": "^0.3.0",
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"vis-data": "^6.1.1",
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"vis-util": "^1.1.6"
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}
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},
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"vis-util": {
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"version": "1.1.10",
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"resolved": "https://registry.npmjs.org/vis-util/-/vis-util-1.1.10.tgz",
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"requires": {
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"moment": "2.24.0",
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"vis-uuid": "1.1.3"
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}
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},
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"vis-uuid": {
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"version": "1.1.3",
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"resolved": "https://registry.npmjs.org/vis-uuid/-/vis-uuid-1.1.3.tgz",
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"integrity": "sha512-2B6XdY1bkzbUh+TugmnAaFa61KO9R5pzBzIuFIm8a9FrkbxIdSmQXV+FbfkL8QunkQV/bT0JDLQ2puqCS2+0Og=="
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},
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"vm-browserify": {
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"version": "1.1.2",
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"resolved": "https://registry.npmjs.org/vm-browserify/-/vm-browserify-1.1.2.tgz",
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@ -10,6 +10,7 @@
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"axios": "^0.19.2",
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"react": "^16.12.0",
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"react-dom": "^16.12.0",
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"react-graph-vis": "^1.0.5",
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"react-router-dom": "^5.1.2",
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"react-scripts": "3.3.1",
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"react-sigma": "^1.2.34",
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@ -7,7 +7,7 @@ function App() {
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return (
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<Layout>
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<h1>Dijkstra</h1>
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<p>Dijkstra is an app thas uses Dijkstra algorithm to display the shortest path between different cities in Belgium.</p>
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<p>Find the shortest path between different cities in Belgium with Dijkstra algorithm.</p>
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<HomeView/>
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</Layout>
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);
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@ -1,66 +1,85 @@
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import React, { useState ,useEffect } from "react";
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import Axios from '../utils/API';
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import { fetchRoads, fetchCities, getShortestPath } from './requests';
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import {Sigma, RandomizeNodePositions, RelativeSize, SigmaEnableSVG} from 'react-sigma';
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import { Select, Button, Icon } from 'antd';
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const { Option } = Select;
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function HomeView() {
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const [cities, setCities] = useState([]);
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const [startingPoint, setStartingPoint] = useState();
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const [destination, setDestination] = useState();
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const [errorSelect, setError] = useState({ message: '', flag: false });
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const [shortestPath, setShortestPath] = useState();
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const [errorMessage, setErrorMessage] = useState();
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const [cities, setCities] = useState([]);
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useEffect(() => {
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async function fetchData() {
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try {
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const { data } = await Axios.get(
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`/countries/1`
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);
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setCities(data);
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} catch (error) {
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console.error(error);
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}
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};
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fetchData();
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fetchCities()
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.then(data => setCities(data))
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.catch(error => console.log(error))
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}, []);
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const [roads, setRoads] = useState([]);
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useEffect(() => {
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fetchRoads()
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.then(data => setRoads(data))
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.catch(error => console.log(error));
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}, []);
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const [graph, setGraph] = useState({nodes: [], edges: []});
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useEffect(() => {
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let nodes = cities.map(node => (
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{ id: `n${node.id}`, label: node.name}
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));
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let edges = roads.map(edge => (
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{ id: `e${edge.id}`, source: `n${edge.start_city_id}`, target: `n${edge.end_city_id}`, label: 'SEES' }
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))
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setGraph({nodes, edges})
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}, [cities, roads])
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function handleStart(city_id) {
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// eslint-disable-next-line
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let [ startingPoint ] = cities.filter(city => city.id == city_id);
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setStartingPoint(startingPoint);
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// Check if start and destination are the same
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if (startingPoint === destination) {
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setError({ message: 'The start and destination must be different.', flag: true });
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return
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}
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// Will reset the error message and shown path
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setShortestPath();
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setError({ flag: false });
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}
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function handleDestination(city_id) {
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// eslint-disable-next-line
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let [ destination ] = cities.filter(city => city.id == city_id);
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setDestination(destination);
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// Check if start and destination are the same
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if (startingPoint === destination) {
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setError({ message: 'The start and destination must be different.', flag: true });
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return
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}
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// Will reset the error message and shown path
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setShortestPath();
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setError({ flag: false });
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}
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function handleSubmit() {
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if (startingPoint === destination) {
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setErrorMessage('Starting Point and Destination must be different cities.');
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return
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} else if (startingPoint && destination) {
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async function getPath() {
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try {
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const response = await Axios.get(
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`/path`,
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{
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params: {
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start_city_id: startingPoint.id,
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end_city_id: destination.id
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}
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}
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);
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setShortestPath(response.data)
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setErrorMessage();
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} catch (error) {
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console.error(error);
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}
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}
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getPath();
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} else
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if (startingPoint && destination) {
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getShortestPath(startingPoint.id, destination.id)
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.then(data => setShortestPath(data))
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.catch(error => console.log(error));
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setError({ flag: false });
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} else {
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setErrorMessage('Please select a Starting point and a Destination');
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setError({ message: 'Please select a start and a destination', flag: true});
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}
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}
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@ -74,6 +93,7 @@ function HomeView() {
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<Select
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defaultValue="Choose a city"
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onChange={handleStart}
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style={{ width: 139 }}
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>
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{cities.map(city => (
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<Option key={city.id}>{city.name}</Option>
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@ -89,6 +109,7 @@ function HomeView() {
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<Select
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defaultValue="Choose a city"
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onChange={handleDestination}
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style={{ width: 139 }}
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>
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{cities.map(city => (
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<Option key={city.id}>{city.name}</Option>
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@ -104,21 +125,32 @@ function HomeView() {
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Get shortest path between the cities
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<Icon type="right" />
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</Button>
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{errorMessage &&
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<p>{errorMessage}</p>
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{errorSelect.flag &&
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<p>{errorSelect.message}</p>
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}
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</section>
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{
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shortestPath &&
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<section>
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<h2>Shortest path from {startingPoint.name} to {destination.name}</h2>
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<p>{shortestPath.path.map(city => (
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<><span>{city.name}</span><Icon type="right" /></>
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<h2>Shortest path from {startingPoint.name} to {destination.name} ({shortestPath.distance}km)</h2>
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<div>{shortestPath.path.map(city => (
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<p key={city.id}><Icon type="right" /><span>{city.name}</span></p>
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))}
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</p>
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</div>
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</section>
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}
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{ graph.nodes.length > 0 &&
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<div>
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<p>Graph</p>
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<Sigma graph={graph} settings={{drawEdges: true, clone: false}} renderer="svg">
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<RelativeSize initialSize={50}/>
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<RandomizeNodePositions/>
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</Sigma>
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</div>
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}
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</main>
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);
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}
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40
src/components/requests.js
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40
src/components/requests.js
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import Axios from '../utils/API';
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export async function fetchRoads() {
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try {
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const { data } = await Axios.get(
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`api/roads`
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);
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return data
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} catch (error) {
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console.error(error);
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}
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};
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export async function fetchCities() {
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try {
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const { data } = await Axios.get(
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`api/countries/1`
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);
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return data
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} catch (error) {
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console.error(error);
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}
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};
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export async function getShortestPath(startingPointId, destinationID) {
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try {
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const response = await Axios.get(
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`api/path`,
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{
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params: {
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start_city_id: startingPointId,
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end_city_id: destinationID
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}
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}
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);
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return response.data
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} catch (error) {
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console.error(error);
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}
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}
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@ -1,6 +1,6 @@
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import axios from "axios";
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export default axios.create({
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baseURL: "https://dijkstra-backend.herokuapp.com/api",
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baseURL: "https://dijkstra-backend.herokuapp.com/",
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responseType: "json"
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});
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